Applied Experimental Study on Drag Reduction Agent in Lanzhou-Chongqing-Chengdu Products Pipeline

Industrial experiments of drag reduction agent (DRA) for product oil is made in Guangyuan-Chengdu Pipeline section of Lanzhou-Chongqing-Chengdu Products Pipeline, aiming at increasing the throughput without adding new pumping equipment and under safe operating condition. The DRA experiment includes 3 DRA-added concentrations for diesel (5 mg/kg, 10 mg/kg, 15 mg/kg) and 1 DRA-added concentrations for gasoline (15 mg/kg) for comparison test. During the experiment, a drag reduction test, throughput increasing test and allowable maximum throughput test under 3 basic flow rates (600 m³/h, 650 m³/h, 700 m³/h) are carried out. The throughput, DRA-added concentration and the influence of shear to the effectiveness of DRA as well as maximum transportation capability at DRA-added condition are analyzed. Through the experiment, a safe throughput level of Lanzhou-Chongqing-Chengdu Products Pipeline under certain amount of DRA is obtained.